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Revenue (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
Municipality
Mar. 31, 2021
USD ($)
Revenue [Abstract]    
Revenue from contracts with customers $ 14,112 $ 12,940
Rents from regulated property 128 141
Total operating revenue $ 14,240 13,081
Utility Service [Member]    
Revenue [Abstract]    
Number of days for customer to make payment after being invoiced 20 days  
Water Utility Service [Member] | Residential [Member]    
Revenue [Abstract]    
Revenue from contracts with customers $ 8,447 8,145
Water Utility Service [Member] | Commercial and Industrial [Member]    
Revenue [Abstract]    
Revenue from contracts with customers 3,588 3,310
Water Utility Service [Member] | Fire Protection [Member]    
Revenue [Abstract]    
Revenue from contracts with customers 836 806
Wastewater Utility Service [Member] | Residential [Member]    
Revenue [Abstract]    
Revenue from contracts with customers 929 471
Wastewater Utility Service [Member] | Commercial and Industrial [Member]    
Revenue [Abstract]    
Revenue from contracts with customers 109 79
Billing and Revenue Collection Services [Member]    
Revenue [Abstract]    
Revenue from contracts with customers $ 130 119
Number of municipalities within the service territory provided service | Municipality 2  
Number of days for customer to make payment after being invoiced 30 days  
Collection Services [Member]    
Revenue [Abstract]    
Revenue from contracts with customers $ 59 0
Number of days for customer to make payment after being invoiced 30 days  
Other Revenue [Member]    
Revenue [Abstract]    
Revenue from contracts with customers $ 14 $ 10